Big headache here (3.5 swap). Anybody's help appreciated (Tilley, SR20DEN.
#41
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It doesn't look too good up close, but when looking at the engine bay, you would see the TB with two pieces of metal running along its length and the TPS in the center. No bolts visible.
#42
OT, but did you ever check your rear spark plugs? the 5.5 gen guys are having problems of leaky rear valve covers, and oil gets into the rear spark plug chambers. I found oil in my chambers, but instead of buying a new VC, I was thinking of using my 3.0 VC, it would save me $40 but I would have to reuse the 3.0 coils.
#43
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No I haven't checked the rear, only the front.
Another thing. Tilley said "coil packs are the same just plug 'em in". But problem is, the front coil packs on the 3.0 have only 2 wires while the rear have 3 wires on the 3.0.. On the 3.5, all 6 packs have 3 wires. Did you find a way around this? I wouldn't know which wire to plug into which.
Another thing. Tilley said "coil packs are the same just plug 'em in". But problem is, the front coil packs on the 3.0 have only 2 wires while the rear have 3 wires on the 3.0.. On the 3.5, all 6 packs have 3 wires. Did you find a way around this? I wouldn't know which wire to plug into which.
#44
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if you still need any help feel free to ask man. kinda sucks that you decided to go the other route. i think this happend cause you decided to use altima parts instead of maxima parts. for example the e-gas pedal, the 2k2 max bolts in place without a problem using the same hardware.
#45
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I think it happened mostly because I didn't have an entire parts car like yours.
But you've been helpful either way, when it comes to making my decision.
Tell me when you decide to hit the track, I'd like to compare your times to Tilley's or mine if I ever get it working.
But you've been helpful either way, when it comes to making my decision.
Tell me when you decide to hit the track, I'd like to compare your times to Tilley's or mine if I ever get it working.
#46
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Small Update:
I converted my TB to cable drive (see Nismo's much more informative thread about it here: http://forums.maxima.org/showthread.php?t=388350), and made brackets for the TPS (Throttle Position Sensor).
Kinda crude, but it gets the job done, and it's fairly strong with enough clearange for the 3.0 cable bracket to move. TPS will read fine, the metal piece pushes the other perfectly.
And yes, it's a universal fact that my pictures suck.
Tomorrow I open both timing chain covers and plug the rest of the 4th gen wiring harness to the 3.5.
I think I have a better idea of what "timing template" SR20DEN was referring to. I think it spins in front of the cam sensor and it reads the signal. Something like that.
If all goes like I want to, I should be able to fire it up sometime next week.
I converted my TB to cable drive (see Nismo's much more informative thread about it here: http://forums.maxima.org/showthread.php?t=388350), and made brackets for the TPS (Throttle Position Sensor).
Kinda crude, but it gets the job done, and it's fairly strong with enough clearange for the 3.0 cable bracket to move. TPS will read fine, the metal piece pushes the other perfectly.
And yes, it's a universal fact that my pictures suck.
Tomorrow I open both timing chain covers and plug the rest of the 4th gen wiring harness to the 3.5.
I think I have a better idea of what "timing template" SR20DEN was referring to. I think it spins in front of the cam sensor and it reads the signal. Something like that.
If all goes like I want to, I should be able to fire it up sometime next week.
#47
Originally Posted by JClaw
No I haven't checked the rear, only the front.
Another thing. Tilley said "coil packs are the same just plug 'em in". But problem is, the front coil packs on the 3.0 have only 2 wires while the rear have 3 wires on the 3.0.. On the 3.5, all 6 packs have 3 wires. Did you find a way around this? I wouldn't know which wire to plug into which.
Another thing. Tilley said "coil packs are the same just plug 'em in". But problem is, the front coil packs on the 3.0 have only 2 wires while the rear have 3 wires on the 3.0.. On the 3.5, all 6 packs have 3 wires. Did you find a way around this? I wouldn't know which wire to plug into which.
#49
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Originally Posted by Nismo3112
All of my coil pack plugs have 3 wires going to them. Maybe its different for the Canadian Maximas.
Perhaps I'll just leave rear coil packs on the 3.5, and use 3.0 up front.
Even if it was working, I wouldn't really drive it. There's still snow up here, and April's almost there.
Originally Posted by vsamoylov
yeah you suck with pictures. can you take some better ones further away. so it looks liek you stuck the tps into the 5.5 gen throttle body?
Basically, the 3.0 TPS turns on the wrong side compared to the 3.5 throttle body, so you have to put it on the same side as the cable bracket for it to read correctly and make some brackets with razor sharp metal pieces that constantly cut your fingers. It's a lot of fun.
I'd rather f*ck a box of nails than do it again.
#50
I knew this would happen, but I'm sad to see you give up. I wish I/we could help you out more, but you're the PIONEER here so you're pretty much on your own.
The functioning VTCs aren't worth the 2K2+ eGas, ECU, harness, etc. wiring headaches IMHO.
I think you should take a week off and come back fresh at finishing off. Sounds like you're beyond the point of frustration and just spinning your wheels man.
Good luck~!
The functioning VTCs aren't worth the 2K2+ eGas, ECU, harness, etc. wiring headaches IMHO.
I think you should take a week off and come back fresh at finishing off. Sounds like you're beyond the point of frustration and just spinning your wheels man.
Good luck~!
#51
Originally Posted by JClaw
One more reason why Canada sucks
Perhaps I'll just leave rear coil packs on the 3.5, and use 3.0 up front.
Even if it was working, I wouldn't really drive it. There's still snow up here, and April's almost there.
Lol, I'll take some more tomorrow.
Basically, the 3.0 TPS turns on the wrong side compared to the 3.5 throttle body, so you have to put it on the same side as the cable bracket for it to read correctly and make some brackets with razor sharp metal pieces that constantly cut your fingers. It's a lot of fun.
I'd rather f*ck a box of nails than do it again.
Perhaps I'll just leave rear coil packs on the 3.5, and use 3.0 up front.
Even if it was working, I wouldn't really drive it. There's still snow up here, and April's almost there.
Lol, I'll take some more tomorrow.
Basically, the 3.0 TPS turns on the wrong side compared to the 3.5 throttle body, so you have to put it on the same side as the cable bracket for it to read correctly and make some brackets with razor sharp metal pieces that constantly cut your fingers. It's a lot of fun.
I'd rather f*ck a box of nails than do it again.
As soon as i got to his shop i saw why its done the way he does it.
VTC is a joke even the fastest hondas get rid of vtech and why bother with the 3.5 TB when the pathy one is the same size and works beautiful.I make adapter plates in my kichen very simple.
when tilleys done with my car many of you will forget the 3.5 ecu<
#53
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Today I only worked on it for 1.5 hours. I almost opened the 3.0 timing chain cover, did some more tweaking to the TB, and removed more of the 3.5 wiring. Should be done by 9 AM tomorrow. The 3.5 cover will be off tomorrow morning too.
I'm still not sure what Sr20Den meant by "timing template". I can see the 3.0 cam sensor is right in front of a gear, no "plate" in sight. Maybe I'll have a better idea once I fully open both up.
On a positive note, I was wrong, all 6 coils are direct plug
I'm still not sure what Sr20Den meant by "timing template". I can see the 3.0 cam sensor is right in front of a gear, no "plate" in sight. Maybe I'll have a better idea once I fully open both up.
On a positive note, I was wrong, all 6 coils are direct plug
#55
Originally Posted by Nismo3112
I saved $200 by modifying the 3.5 TB. Thats why.
#56
Originally Posted by Nismo3112
The signals that the 3.0 cam sensor reads are on the big LH side timing sprocket. Looking at it, it would be rather difficult to duplicate the correct readings.
I would not go thru the VTC trouble for 10whp everywhere
#57
Originally Posted by krismax
I bought mine for $75 dollers and can have a perfect TPS setting . Go cheap with these projects and youll be upset later.
#59
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Originally Posted by krismax
Originally Posted by Nismo3112
The signals that the 3.0 cam sensor reads are on the big LH side timing sprocket. Looking at it, it would be rather difficult to duplicate the correct readings.
I would not go thru the VTC trouble for 10whp everywhere
Originally Posted by Nismo3112
The signals that the 3.0 cam sensor reads are on the big LH side timing sprocket. Looking at it, it would be rather difficult to duplicate the correct readings.
BTW, what do you mean by "big LH side timing sprocket"? Are you talking about the gear in front of the cam sensor?
#61
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Yeah I opened both up completely today (pulled the 3.5 back out, you can't fully remove the timing chain cover while in the car on the 3.5).
What's worse is that the 3.0 timing chain cover won't fit on the 3.5 since the 3.5 gears go so far out.
If our VQ Wizard could step up and give me some advice it'd be great, because I really don't see how it can be done while keeping the 3.5 chains, and gears. I'm 100% positive that the 3.5 timing cover NEEDS to be used if I do keep the 3.5 chains, because of how far the gears stretch out like I said earlier.
I guess It'd be possible to drill a hole about 1-inch in diameter in the 3.5 timing chain cover to place the 3.0 cam sensor pretty much where it would be on the 3.0; right in front of a cam gear (or 'sprocket', if you want to call it that).
Then, we'd need to make the same symbols stand out like on the 3.0 gears (nismo's pic: http://img126.exs.cx/my.php?loc=img1...ngcover7vl.png).
Honestly that's kind of iffy. I'd really like to be the first to do it your way SR, since the 3.0 can still be sold and I wouldn't have to open up my heads and pay someone to drill the cams. It'd save money, but it's hard to tell what you have in mind, let alone get a general idea of it.
Also I'm not sure about adding weight on one of the two main cam gears while leaving all the others intact. Might throw something off balance...
What's worse is that the 3.0 timing chain cover won't fit on the 3.5 since the 3.5 gears go so far out.
Originally Posted by SR20DEN
A new timing template has to be made for it to read.
I guess It'd be possible to drill a hole about 1-inch in diameter in the 3.5 timing chain cover to place the 3.0 cam sensor pretty much where it would be on the 3.0; right in front of a cam gear (or 'sprocket', if you want to call it that).
Then, we'd need to make the same symbols stand out like on the 3.0 gears (nismo's pic: http://img126.exs.cx/my.php?loc=img1...ngcover7vl.png).
Honestly that's kind of iffy. I'd really like to be the first to do it your way SR, since the 3.0 can still be sold and I wouldn't have to open up my heads and pay someone to drill the cams. It'd save money, but it's hard to tell what you have in mind, let alone get a general idea of it.
Also I'm not sure about adding weight on one of the two main cam gears while leaving all the others intact. Might throw something off balance...
#62
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Originally Posted by IceY2K1
I think you should take a week off and come back fresh at finishing off. Sounds like you're beyond the point of frustration and just spinning your wheels man.
#63
Yeah, the VQ35 VTC pulleys on the intake cams require a VQ35 timing cover.
However, can't you simply replace the VQ35 VTC pulleys with VQ30 cam sprockets and JWT cam spacers and use the VQ30 timing cover like japmaxSE did?
However, can't you simply replace the VQ35 VTC pulleys with VQ30 cam sprockets and JWT cam spacers and use the VQ30 timing cover like japmaxSE did?
#66
You'll need the 3.0 crank pulley also.
Originally Posted by Nismo3112
My setup:
3.5 Tilley cams, JWT spacers, 3.5 heads, 3.5 block (duh)
3.0 timing gears, chains, covers
3.0 Oil pan
Everything will bolt up almost, and the 3.0 cam sensor will read.
3.5 Tilley cams, JWT spacers, 3.5 heads, 3.5 block (duh)
3.0 timing gears, chains, covers
3.0 Oil pan
Everything will bolt up almost, and the 3.0 cam sensor will read.
#69
Originally Posted by IceY2K1
When you say "Everything will bolt up almost", what is the almost part?
#70
THANKS for the picture...I hope more people doing these swaps can post more of the modification steps necessary.
How did you enlarge them?
Could you just leave them removed or would there be sealing or other issues?
How did you enlarge them?
Could you just leave them removed or would there be sealing or other issues?
#75
Yup. just enlarge the hole that the bolt goes through on the 3.0 timing cover so it lines up with the threaded hole on the head. You don't need to do anything to the head.
The 3.0 timing cover bolts will work too, as they are identical.
The 3.0 timing cover bolts will work too, as they are identical.
#79
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Originally Posted by IceY2K1
You'll need the 3.0 crank pulley also.
#80
Then why does the SAME bolt fit through the VQ35 rear timing cover, but not through the VQ30 rear timing cover.
I'm still missing the picture, I guess.
I'm still missing the picture, I guess.
Originally Posted by Nismo3112
^^ All of the bolts are the same shape, length, and size.